I’m not sure about the triangles, but 3ds Max has the ability to straighten several selected parallel loops at once. It is one of the very few Max features that I miss in Blender where you have to do Loop Select and Align one loop after the other manually.

Functions such as Rectify or Quad Unwrap are nice but cannot be used on everything because they require quads and always want to create rectangles. And Quad Unwrap afflicts the whole island, not just the selection. So it would be nice to have a better version of Align that is able to align several individual loops at once.

The problem that I see here is that even though Blender’s UV selection mode can be set to Edge, it actually selects the verts, meaning you can’t even select two parallel edges without selecting the entire face…

edit: just realized I didn’t say so before, thanks a lot for this addon! It brought many features that I missed and basically replaced textools for me which isn’t developed any more.

do you think it would be possible to add pixel padding for the uv toolkit, its way easier to determine uv island paddig/margin by pixels like in other softwares. Here is a possible solution from Vasil how to make this happen “Vasil Matsuk
But it not hard to calculate the distance between two systems. example 1/1024*32 pixels=0.03125. I do it manually, but more procedural way will be helpful for my work.”Right-Click Select